Application of RFID technology smart parking management system

Currently, one of the mainstream RFID technologies in parking lot smart management systems is the use of inductive IC cards and image recognition as management methods. It also has functions such as infrared remote sensing door switches, anti-theft alarms, and reversing limiters. This system was developed with the rise of new identification technologies such as IC cards, short-range RF identification cards, and long-range RF identification. It overcomes the shortcomings of magnetic card and barcode technology, and has the characteristics of long life, easy use, not easy to be damaged, and high confidentiality, bringing smart parking management to a new level.

The management technology of inductive IC card plus image recognition supports both long-distance and short-distance readers, supports the working methods of permanent cards and temporary cards, and has functions such as automatic identification and record storage, which can prevent the loss of funds. Since this technology is used in conjunction with graphic comparison and IC cards, it achieves the purpose of preventing car theft.

RFID technology and smart parking system: more secure and reliable

In addition, there is currently a mainstream technology in the industry: contactless RF card identification technology. It inherits the advantages of IC card technology, with high confidentiality and non-forgery, eliminating the need to swipe the card and improving the recognition speed. Since this technology does not have movable mechanical devices in the identification system, it eliminates the jam phenomenon and improves the reliability of the system.

For paid parking lots, the reliability of the identification system means the reliability of the parking lot. Therefore, read-only RF contactless identification cards have become an ideal identification technology in parking lot management systems. According to the manufacturing process of the identification card, non-contact identification cards can be divided into backscatter cards and surface acoustic wave cards; according to the identification range, they can be divided into short-range RF (radio frequency) cards and long-range RF (radio frequency) cards.

The short-range RF card uses backscatter technology, and the identification range is generally 0.3 meters to 0.6 meters. Due to the short recognition distance, the cardholder is required to present the recognition card in front of the card reading device. The long-distance RF card uses advanced surface acoustic wave technology, which expands the card's identification range, increases the identification speed, and can maximize the advantages of non-contact identification technology. Trucks can be identified over a wide range of areas.

In addition, due to the use of high-speed identification technology, it can be identified even when passing through the card reading device at high speed. Years of operation records show that its effective recognition rate is close to 100%.

Through the above two technologies, the smart parking lot management system effectively prevents the damage and interference caused by human factors to parking lot management, realizes intelligent and scientific management of parking lots in buildings and property communities, and can control cost losses, improve operational efficiency, and ensure Vehicle safety.

Management model

The smart parking management system adopts the "one car, one card, one" management model, that is, from the time the vehicle enters the parking lot until the vehicle leaves the parking lot, all information related to the vehicle is uniquely related to the card's ID number. Through this unique ID number, we can combine information such as user, vehicle model, vehicle license plate, vehicle color, and vehicle image, vehicle entry and exit time, parking duration, designated parking space number, parking route, fees payable, and other information, Unify them in the database for easy query and storage.

In this way, the data information of toll management, parking guidance, vehicle identification, and safety monitoring subsystems are established on the same data platform, thereby effectively integrating each subsystem into a unified smart parking management system.

The smart parking management system is a computer network composed of a management system and a channel identification system. The network communication protocol adopts the TCP/IP protocol. The system can effectively, accurately and intelligently identify, collect, record and Store the data and information of system vehicles (vehicles equipped with electronic license plates) and non-system vehicles (vehicles without electronic license plates) entering and exiting the parking lot as needed, Upload, process, and supplement through corresponding manual intervention when necessary to avoid the impact of abnormal events (non-system vehicles entering and exiting) and ensure that the system has efficient vehicle intelligent release capabilities.

For smart parking systems, it is required that the sensitivity should be high, the adaptability of use should be large, and the installation should not be too complicated. At the same time, it should not be affected by day and night, which can ensure stable and reliable monitoring of vehicles in any environment. Engineering applications It is convenient, maintenance-free, and the cost should not be high.

The radio frequency identification equipment must be able to communicate with the electronic car card when the car passes by at normal speed; the vehicle's time, space information, car card information, and instructions from the data processing center need to be saved locally; the system should perform regular self-tests and faults Self-check and upload the working status of the equipment in time for processing by the system operation center; after troubleshooting or power supply restoration, the system automatically restarts to ensure normal operation of the parking lot and complete data transmission; the software structure is modular; it can meet the needs of traffic control equipment and monitoring Interface requirements for equipment (such as gates, traffic lights, electronic scales, image capture, etc.).

The operation process of the parking lot management system is based on the process of customers parking and picking up their cars. The workflow of the parking lot is always centered on the process of users' vehicles entering and exiting the parking lot. Parking lot users are generally divided into two categories: temporary users and fixed users. When a vehicle enters/exits the antenna communication area of the parking lot, the antenna uses microwave communication to conduct two-way data exchange with the vehicle-mounted radio frequency card, reads vehicle-related information from the radio frequency card, automatically identifies the radio frequency card, and determines whether the vehicle card is Effective and legal, the lane control computer displays the license plate number corresponding to the radio frequency card, and driver and other information; the lane control computer automatically stores the passing time, vehicle and driver related information into the database, lane control The computer makes judgments based on unique data to make decisions about release or ban.

By comparing with the traditional parking lot, the smart parking lot management system not only retains the functions of the traditional parking lot, but also relies on the original charging medium to improve the management medium and selects radio frequency cards as the management medium of the smart parking lot. Through demand analysis, the functions required by the smart parking management system were clarified, and then the structural design diagram of the smart parking management system was proposed.

In view of the user groups of the parking lot, the entry and exit workflows for temporary users and fixed users were analyzed and designed respectively, so that fixed users can enter and exit the parking lot without stopping.

With the advancement of science and technology and the development of human civilization, smart parking management systems are increasingly used in residential communities, large commercial buildings, and workplaces. People's requirements for parking lot management and intelligence are getting higher and higher, and they are in urgent need of better, automated, convenient and fast management methods.

Traditional parking lot management has various disadvantages such as high management costs, high labor intensity, low service efficiency, capital loss and serious vehicle theft. It cannot guarantee the income of investors and the safety of parked vehicles, thus severely limiting the development of the parking lot business. develop.

The RFID smart system not only improves work efficiency, saves manpower and material resources, reduces operating costs, and prevents employees from engaging in fraud and arbitrary charges, but also makes the entire management system safer and more reliable. Including driver identity recognition, vehicle image comparison, automatic guidance of parking spaces, vehicle entry and exit status, parking space tracking records and charge management, and query and print vehicle information at any time.